000 00290 a2200121 4500
080 _a581.498:633
_bW 363 R
245 1 _aRoot development of field crops
_cby J.E. Weaver
260 _c1926
650 _aRoot Development
650 _aField Crops
100 1 _aWeaver, J.E.
_d
901 _a4469
999 _c34600
_d34600